Lock-controlled switch system



June 18, 19 29. I H. SCHWARZE ET AL 1,717,414

- Logx comnommn swrrcu sysma Original Filed Sept. 6. 1921 2 Sheets-Sheet l June 18, 1929. sc w z L I 1,717,414

LOCK CONTROLLED SWITCH sYs'rEu 2 Sheets-Sheet 2 Original Filed Sept. 6, 1921 a 6 H 1 45k 2 6 4 a 6 9 6 y 2 I a Mag 1,

Z. fi g via fi A a a Patented June 18,1929.

UNIT -S SP F J n minscnwi zmmrmiv mnonnnn, o'rroivrrno, iiironreniv,nssre vons 'ro GENERAL MOTORS conronnrron, or .DETROIT, MICHIGAN, .A CORPORATION or DELAWARE: 1

LQdK-CONTROLIQEIQ swrrcrr strsrnivr;

Original application filied September 6, 1921 ,Seria1 No. 498,931 Ilivided and this application filed February 7,'

This invention relates to lock controlled electric switches and the particular form of embodiment of the inventiondescribed here-h inafter is an improvement on switches of the 5 type disclosed inthe patentto 'KaislingNo.

1,193,698, August 8, 1916. In the apparatus disclosed in thepatent referred to a lighting switch includes a lever operableto several positions to control various lighting circuits of 1 anautomobile, and includes alock for locking 1 the lever in anyof its positions either on or off. In the present invention the general object is to provide an automobile lockswitch controlling circuits in such a mannerthatthe lighting of the fear to" comply with the law will not depend entirely on the'memory of l the driver. In carrying out this object we haveprovided that in. order to find the key hole of the switchlock', the dash lamp and rear lamp may be lighted before the switch is unswitch isunlocked; the 'ffrontlights will be automatically; connected. with the battery. Otherand furtherobjectsof the present inventionwillbe apparent from the following description, reference being had tothe ac-. companying drawings, wherein a preferred ly shown.

Inthedrawings: a Fig.1 showsdiagrammatically aplan of the switch embodying thejpresentinventiontogetherwith a wiring diagram ofan ignition circuit and other electrical translation cira cuits; and r Figs. 2,3and 4 are diagrammatic viewsof certain parts showninFig. 1, showing; these part'sin variouspositions.- Referring to the drawings, a support 20 carries stationary contacts 21,22, 23 and 24 connected respectively with grounded elec trical translation circuits 25, 26, 27 and28.

Circuits 25,26 and 27- includevariouslighting circuits of an automobile, and circuit28 includes the-ignitionapparatusforthe automobile engine (not shown); -A movable switch contact 29 isrotatably supported by p support20 and is moved by lever30. Contact 29 includesfingers 31 andi32.; Contact embodimentof thepres'entinventionis clear locking cylinder 70:

Serial No.- 156,503.

29 is connected by wire 33 and wire 34 with grounded battery 35.; V X I I To index the contact 29 in its various positions, a plate 36 having spaced lobes or lugs V "Leyer is slidably and pivotally mounted on pin 51 secured .to support 20 and carries rollers 52 "and 53 cooperating with plates 36 end against-lever 50 andis attached at the other end to'alug55 carried by support 20,

whereby yieldingly to maintain rollers 52 and 53 in engagement with saidplates36 and r .42 respectively. locked; and that thereafter when the light Locking bolt 60 is slidablymounted upon support 20, said support carrying studs 61 and 62 extendingthrough slots 63 and 64'-respectively provided 11111301660. Bolt 60 is pro-y vided with lug 65 adapted to enter the notch 66 between lugs 37 and 41 of plate 36 or the notch 67 betweenlugs 40 and 41. Bolt 60 isprovided withlug 68 adapted to enter the notch 69 betweenlugs 43 and45 of plate 42.

Obviously the bolt cannot be moved to locking position unless the contact 46 is in off position as shown in Figjl.

Thebolt 60 is actuated by a key operated journalled in a support 7-1. Cylinder 7O carriesa pin 72for engag inga stud 7 3qcarried by bolt 60. As shown iiiFig'. 1, bolt 60is in unlocked positiom: but

one counter 'c1ockwise turn of cylinder 70 will cause pin 72 to move bolt 60 to'locked position shown in Figs.'2 and 3.

Starting with the bolt 60 in locked position, as shown in Fig. 2,ignition switch contact 46 will be locked since lug 68' will then be located in notch 69 of plate 42. The

switch contact29 'may,: however, be moved r from the off position to.its second position of ad]uistment,-or'to its first circuit making or on position as shown in Fig. 3. Thisis' possible since notch 66 is wide enough to permit 65 L and 42respectively. Spring 54 bears at one finger 31t0 engage contact 21 betorelug 65 is struck by lug ll. When this occurs,the dashlamp or instrument board lamp of the automobile will be connected with the bat-i tery 35, thus enabling the driver to find the 1 keyhole in the locking cylinder 7 0 after dark;

Referring to Fig. 3, whencontact 29 has been moved into itsfirston position, the detent roller "52 will be in the position shown wherein it has ridden over the point of lobe 39 and part way down onto the beveled cam ming surface 39*. When the bolt 60 ismoved into unlocked position shown inFig. 4, the

roller 52, being urged by spring 5a against the surface 39*, Wlll exert a pressurein such a. direction as to produce clockwise rotation of contact 29 so asto bring finger 31 into en-v gagement with contacts 21 and22. In this a manner theautomobile side lights will be automatically turned, on, Therefore the driver need not remember to turn on'the side lights tocomply with the city driving orchnances, i a i r a V a The fact that the drivercannot seethe key- !hole after dark makeshim operate theswitch lever to obtain light at the keyhole. Since the rear lamp is on the same circuitwith the dash lamp,'the rear lamp will inadvertently.

' l be turned on. Theunlocking of the ignition switchlever incrder that the engine may be started turns on the'side lights. i, Therefore the external lighting of the automob le becomes automatic depending on the unlocking of the ignition switchafterdark. H c

' It is advantageous to place the rear lamp on the dashilampcircuitfor in'some places the lighting of therear lamponly is neces sary for parking. Locking the light switch so that thejside andheadlights'cannot be turned on without authority prevents- Waste of battery current by meddlers.

;By turning the contact 29 to ts third on position when theroller 52- willfengage in the notch between lobes 37 and 38,0auses finger 31 to disengage contact and to en-- gage contact 23 to connect the headlamps withthe battery; and finger '32 will thenen'- i gage contact 21 but not contact.22.' V a The ignition switch will be held resiliently in its'otf position, as shown in Fig. '1, by the engagement of the roller 53 in thenotch between lugs 44 and ,45, and inthe'on-position by the engagement of theroller in the notch between lugs 43 and 44; While the form of mechanism herein shown and described con stitutes a a preferred form of embodiment of the invention, it is'to beunderstood that I other forms might be: adopted, all coming J within the scope of the claims which follow.

This application isa division of application Ser. No. 498,931, filed September 6, 1921 :(nowPatent No..1,6 35,226, issued July 12,

Yl Veclaim: v i v a 1. In an electric system, the combination of a controlelement, a lamp,acircuit for said lamp controlled by said element,other mechanism also controlled by said element, and a locktor said element arranged to be illuminated by said lamp, the partsbeing constructedan'd arranged to'permit the element to, be

moved to a position for lighting'said lamp bee fore unlocking the lock. 7

2 In anelectric lighting system for 'auto- I mobiles, a dash light, side lights and headlights, a switch'for controlling the'circuits to saidlights, contacts for said circuits, the contacts so arranged that the dash light may be lighted alone or in conjunction with either the sidelights or headlights,-and a lock forsai'd switch adapted when locked to permit the switchtobemoved tolight the dash light beand a third position controlling other translating devices, and saidlock arranged to permit, when in the lockedposition, movement of said switch from said neutral position to said second position-but prevent movement togsaid third position.

a 4. i In an electric system for use with internal combustion engines, a combined control mechan sm c omprismgan 1gn1t1on switch, an electr c lamp, a lightmg switch controlling the supply ofcurrent to saidlamp and a lock 1 for both switches, said lighting switch having anoftpositioma first circuit closingIposition 1n whlch it is adapted to controlthe illuminationof the-lock,-and a secondfcircuit closing position in which it is adapted to control other circuits,said lock constructed and arranged to prevent movement of said ignition switch and to permitmovement of said lighting switch to said first position WllllG preventing move ment to said secondposition;

5. A lock switchcomprislng aswitch meme" .beiya lock thereforandmeans torilluminating said lock, saidmember having an oil posi- 1-,

tion and a plurality of circuit-closing positions, the switch in the first circuit closing po- SltlOIlbGiIlg arranged to cause lighting of said illuminatlng means, and thelock arranged to 6. In electric lighting system the combination with a switch having a plurality ofcircuit closing positions, a lock for said switch permit, when inmlocking position, the move- 'ment of theswitch member to the first circuit "closing position while preventing movement to other circuit closing positions.

adapted when in locked position to permit,

movingfsaidswitch from the off position to one of sand clrcuit closing positions but preventing itsmovement to a secondcircuit closing position,- a'lamp controlled by saidswitch cuit closing position, means for locking said switch adaptedwhenin locked pOSltlOIItO perl0 mit the switch to be moved from the off position to the first circuit closing position but preventing movement to the second circuit closing position, a lamp for illuminating the switch arranged to be lighted by movement of said switch to said first position, and lamps for the exterior of the vehicle arranged to be lighted bymovement of said switch to said second position, saidswitch adapted to move position when unlocked, v 8.In an electric ,system,the combination with a'switch havingaplurality 0fcircuit closing positions, means for locking said automatically from said firstxto said second switch adapted, whenin locked position, to permit the switch to be moved from off position to a first circuit-closing position but preventing movement to a second circuitclosing position, means for illuminating said lockingmeans arranged to be operated by movement of said switch to said first position and other translatingmeans arranged to be operatedby movement of said switch to said second position, said switch arranged to move automatically from said first position to said second position upon unlocking said lock ng means.

9. An electirc lighting system for vehicles comprisinga switch having a plurality of circuit-closing positions, means for locking said switch adapted, when in locked position, to.

permit'movement of said switch from off position. to the first circuit-closing position, means for moving said switch automatically from said first circuit-closingposition to a second ClI'Clllt-C-lOSlIlg position upon movement of saidlocking means to unlocked posi- .tion, a dash lamp arranged to be lighted by movement of said switch to said first position and othervehicle lamps arranged to be lighted by movementof said switch to said second position. in v r Y In testimony whereof we aflix our signatures. l

HERMAN SGHWARZE. FENN M. HOLDEN. 

